Sounds like it was done wrong to me too. I adjusted my girlfriends wrong one time, but it actually drove better.
I was off on the #3 exhaust valves (too much clearance).
I could hear it tapping so I went through the whole procedure again, and found that #3 exhaust had been adjusted wrong.
If they are all off, I guess your car could stall. I would try doing it again. Good Luck!